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(:Test: op-subtract-yearMonthDurations-9                 :)
(:Written By: Carmelo Montanez                           :)
(:Date: June 28, 2005                                    :)
(:Purpose: Evaluates The "subtract-yearMonthDurations" function used :)
(:together with and "and" expression.                    :)
(: Apply "fn:string" function to account for new EBV.     :)
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fn:string((xs:yearMonthDuration("P01Y01M") - xs:yearMonthDuration("P02Y02M"))) and fn:string((xs:yearMonthDuration("P02Y03M") - xs:yearMonthDuration("P04Y04M")))